Rohit Shakya

New Delhi · India · rohit.rkshakya@gmail.com

Hello world! I hold an MSc in Computer Science from the Department of Computer Science, University of Delhi. I currently work as a Senior Software Engineer at OLX Indonesia, where I design and optimize scalable backend systems for high-impact services. Previously, I worked as a Software Development Engineer 2 at Healthians, a Software Engineer at ShopClues, and at Viva Online Learning Technologies.

With over 4 years of backend development experience, I specialize in building cloud-native, distributed systems using Java, Kotlin, PHP, Spring Boot, and related technologies. My work has impacted more than 50 million users globally across the e-commerce, logistics, healthcare, and edtech domains.

I'm passionate about system design, performance optimization, and solving complex technical problems. If you're interested in learning more about my technical journey, feel free to explore my projects.


Skills

Programming Languages & Tools

Education

Department of Computer Science, University of Delhi

MSc Computer Science
Advance Algorithm, Advance Operating System, Machine Learning, Compiler Design, Data Science, Information Security, Digital Image Processing, and E-Commerce

CGPA: 7.531

July 2019 - June 2021

Ramanujan College, University of Delhi

BSc(H) Computer Science
Computer Fundamentals, Computer System Architecture, Programming Languages, Operating Systems, Computer Networks, Data Structures, Algorithms, Discrete Mathematics, Theory of Computation, Calculus, Numerical Methods, Linear Algebra and Data Science etc.

CGPA: 7.486

July 2016 - May 2019

Projects

Hey there, Click here to view source code.

BUFFER CACHE AND GET BLOCK SIMULATION
Jan 2020 - Mar 2020

Simulated the buffer cache and get block algorithm as a python application, project in the operating system.

BLOG POSTING SITE
Apr 2019 - May 2019

Developed and Deployed a blog posting site from scratch featured with the blogging service, user authentication, weather report, news, and geolocation coordinate system.

PHP MAILER SYSTEM
Feb 2018 - Apr 2018

Developed a PHP Mailer System using PHPMailer library, which is embedded in a web application used to send emails safely and easily via PHP code from a web server.

INTERNSHALA BLOOD BANK
Oct 2020 - Nov 2020

Built a blood bank web application task provided by Internshala to hire web developer intern for 2020-2021 session.

KARAOKE RENDER
Dec 2021 - Jan 2022

The Karaoke is an instrumental version of a well-known popular songs. Lyrics are usually displayed on a video screen, along with a moving symbol, changing colour.

CSS CLIP-PATH SHAPE MAKER
Dec 2021 - Jan 2022

This online generator helps with creating shapes for images using the css clip-path property.

WORD SEARCH PUZZLE
Nov 2021 - Dec 2021

A word search is a puzzle that uses words and puts them in a grid. The point of the game is to find all of the words hidden in the grid.

OPTICAL CHARACTER READER
Jun 2021 - Jul 2021

Conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene-photo.

VIVA VOLT
Jan 2021 - Present

VOLT is a comprehensive educational programme covering the school curriculum, learning at school, self-learning and assessment.

VOLT JUNIOR
Dec 2021 - Jan 2022

Pre-Primary Module of the Viva VOLT

CONTENT MANAGEMENT SYSTEM
Jan 2021 - Dec 2021

It's an admin-specific platform in an application that allows for access and manipulation of data within the user interface of the site.

PHLEBO APP ENHANCEMENT
Apr 2023 - Nov 2023

Enhanced the Healthians Phlebo app with advanced appointment scheduling, phlebotomy services, and patient data management modules.

HEALTHIANS ERP/CRM REVAMP
Apr 2023 - Nov 2023

Revamped internal ERP/CRM platform, improving workflows, lead conversion, and sales efficiency by 15%.

PRODUCT CATALOG OPTIMIZATION
Jan 2024 – Present

Improved performance and throughput of Product Catalog service by optimizing queries and enabling multi-location support.

OLX SYSTEM SCALABILITY
Jan 2024 – Present

Designed scalable systems and integrated observability tools (SonarQube, Datadog) across services like Hermes, Panamera Core, and Device Service.

MANY MORE TO COME
Work in Progress

...


Experience

As a Software Engineer at OLX Indonesia, Viva, ShopClues, and Healthians from January 2021 to Present, I had the privilege of working on multiple high-impact projects across various domains — including the Viva Volt Project, Smartship (an e-commerce logistics solution), Healthians CRM, Phlebo App, and OLX's Catalog, Panamera Core, Hermes, Device Service, and User Service.

During this period, I made significant contributions to backend system development, performance optimization, and API design — all of which were instrumental in transforming platforms across logistics, healthcare, edtech, and e-commerce industries.


Some of my key responsibilities included building robust APIs, optimizing systems and queries, integrating carriers and channels, and managing reporting crons for Smartship.in. The platform delivered a comprehensive suite of services including Order Management, Logistics Routing & Optimization, Shipping Carrier Integration, and Analytics & Reporting tools — all aimed at streamlining logistics and order fulfillment for both internal teams and external partners.


At OLX Indonesia, I worked on scalable backend systems serving millions of users. In the Catalog service (Kotlin), I contributed to high-performance listing APIs. On Panamera Core and Hermes (PHP), I worked on business logic orchestration. In Device and User Services (Java), I developed and optimized features such as fraud detection, device tracking, and session management. I also participated in code refactoring and system design to enhance modularity, scalability, and fault tolerance.


In addition to core features, I played a key role in system optimization to enable seamless data flow between internal and external systems — improving interoperability, performance, and user experience.


To ensure system reliability and performance, I implemented structured logging, robust error handling, and various optimization techniques. These efforts improved code quality, reduced latency, and enhanced stability across all platforms I worked on.


My experience across these projects was incredibly rewarding, allowing me to design and develop complex backend systems that redefined logistics, healthcare technology, and marketplace platforms — ultimately contributing to business growth and customer satisfaction.


Interests

Apart from being a Software Developer, I enjoy spending time outdoors—especially going on peaceful morning walks with my pet, Kio, and playing professional chess. In the winter, I love experimenting with fashionable outfits, while the warmer months in New Delhi inspire me to explore local beverages, regional cuisines, and connect with diverse people and cultures. I also aspire to travel and experience different cultural landscapes around the world.

When indoors, I enjoy watching sci-fi and fantasy movies and TV shows. I’m also an aspiring reader and a regular problem solver on LeetCode, where I especially enjoy solving Sudoku-style challenges. A large part of my free time is dedicated to exploring the latest trends and advancements in technology and software development.



Resume

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